The Jesusita Fire has burned nearly 9,000 acres and destroyed or damaged about 80 homes and other buildings since it began Tuesday, according to the team coordinating firefighting efforts.
Mandatory evacuation orders were downgraded to evacuation warnings, the team said in a news release. Portions of three roads and Highway 154 remained closed.
Eighteen firefighters were injured, a spokeswoman for the team said, but most of the injuries weren't serious.
Area temperatures hovered Sunday in the high 60s with winds between 3 mph and 7 mph, according to the National Weather Service.
"All of those together really gave us the opportunity to get in there and make a difference," Fire Chief Tom Davis of Santa Barbara County said Saturday
The cause of the fire was unknown.
The blaze comes about six months after another wildfire, the Tea Fire, destroyed about 200 homes in the area.